Guidance on implementing the Water Supply (Water Quality) Regulations in England and Wales

The documents here provide guidance to water companies, inset appointees and licensed suppliers on the implementation of:

i) the Water Supply (Water Quality) Regulations 2016 (S.I. 2016/614), as amended by the 2018 Amendment Regulations (S.I 2018/706), that apply to water companies whose areas of supply are wholly or mainly in England, and

ii) the Water Supply (Water Quality) Regulations (Wales) (S.I. 2018/647 (W.121)) that apply to water companies whose areas of supply are wholly or mainly in Wales.

These statutory instruments are known collectively as the Regulations.

In all sections covering individual Regulations, the main paragraph reference numbers relate directly to the relevant English regulation number. Wherever the Welsh Regulation number is different to the equivalent English regulation, the Welsh regulation is referred to alongside in square brackets thus: [ ].

Guidance on the Regulations
Introduction – Purpose; Regulatory framework in England and Wales; References

Introduction

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Part 1 – General Regulations, Definitions

Regs 1-2

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Part 2 – Water supply zones – Delineation and designation of water supply zones

Reg 3

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Part 3 – Wholesomeness

Reg 4

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Part 4 – Monitoring of water supplies and Appendix 6.1 – Radioactivity - Monitoring

Regs 5-10 and Appendix 6.1

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Part 5 – Monitoring additional provisions - Sampling at treatment works and service reservoirs

Regs 12-14 [11-13]

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Part 5 – Monitoring additional provisions – Sampling new sources

Reg 15 [14]

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Part 5 – Monitoring additional provisions – Collection and analysis of samples and Appendix 16.1 Analysis of samples

Reg 16 [15] and Appendix 16.1

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Part 6 – Drinking water protected areas – Abstraction point monitoring

Reg 17

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Part 7 – Investigations, authorisation of departures and public buildings

Regs 18-25

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Part 8 – Water treatment – Disinfection and other treatment arrangements

Reg 26

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Part 8 – Water treatment – Risk assessment, plumbosolvency treatment and replacement of lead pipes

Regs 27-30

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Part 8 – Water treatment – Materials and products. Offences

Regs 31-33

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Part 9 – Records and information - Public records, and
Part 11 – Enforcement

Regs 34-35, 38

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Page reviewed: 3 September 2018
Page modified: 3 September 2018

Drinking Water Inspectorate